The driver of the Ferrari, identified in a statement by the PGA Tour as Haas's friend Mark William Gibello, was tragically killed when their vehicle rolled over.

Legally Blonde and Enlightened star Wilson was not hurt in the crash, but both Haas and the driver of the BMW were hospitalised. A statement released on Haas's behalf has since confirmed that he's been released from doctors' care.

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(Bill Haas)

That press statement read: "Last night in Pacific Palisades, California, Bill Haas was involved in a serious car accident in which the driver – a member of the family with whom Haas and his family were staying for the Genesis Open – was killed. While Bill escaped serious injuries and has been released from the hospital, he is understandably shaken up and – more importantly – his deepest condolences go out to the host family during this tragic and difficult time.

"Bill will withdraw from the Genesis Open and plans to head home to Greenville to recover. He appreciates the support of friends, family and the golf world as a whole, and he has asked for privacy as he processes what has happened.

"According to Los Angeles Fire Department rescue reports, the accident happened in the 500 block of N. Chautauqua Blvd around 6:30 p.m. local time Tuesday. It was a two-car collision with a rollover, with the 35-year-old Haas a passenger in a Ferrari. He and the 50-year-old female driver of the other car, a BMW, were transported to a local hospital, with fire department officials initially reporting both in serious condition."

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Haas had been expected to tee-off early Thursday morning (February 15) at the nearby Riviera Country Club for the Genesis Open.

A spokesperson for the Los Angeles Police Department confirmed to KTLA that an investigation in the cause of the crash remains on-going.